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Northwest Africa 7932
Basic information Name: Northwest Africa 7932
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7932
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 160 g
Meteoritical Bulletin:  MB 102  (2013)  CV3
Recommended:  CV3    [explanation]

This is 1 of 553 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 31 Jul 2013
Writeup from MB 102:

Northwest Africa 7932 (NWA 7932)


Purchased: 2013

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Abdelfattah Gharrad, Abdellah Afiniss, and Adam Bates in Morocco, 2013.

Physical characteristics: Single stone, dark-gray exterior, sawn surface shows small scattered chondrules and CAIs set in dark-gray matrix.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows dominant (~75% volume) fine-grained matrix, sparse PO and POP chondrules, most 200-500 μm, irregularly shaped chondrules common.

Geochemistry: (C. Agee and L. Burkemper, UNM) Olivine range Fa0.8-38.6, n=43, ferroan olivine Fa13.4±10.9, Fe/Mn=99±55, n=37; aluminous high-Ca pyroxene, range Fs 0.2-16.2, range Al2O3 1.43-17.53 wt%, n=9; low-Ca pyroxene range Fs 1.2-24.1 n=4; plagioclase An81.2, n=1. (Karen Ziegler, UNM) Oxygen isotope mean values of 2 analyses on 2 acid-washed bulk samples, 1.6 and 1.7 mg, gave δ17O= -4.825, -5.155, δ18O= -1.283, -1.260, Δ17O= -4.148, -4.490 (linearized, all per mil).

Classification: Carbonaceous chondrite (CV3), oxygen isotopes on CCAM, in CV3 field.

Specimens: 20.5 g including a probe mount on deposit at UNM, Abdelfattah Gharrad, Abdellah Afiniss, and Adam Bates hold the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013
Mass (g):160
Fayalite (mol%):0.8-38.6
Ferrosilite (mol%):1.2-24.1
Classifier:C. Agee, UNM
Type spec mass (g):20.5
Type spec location:UNM
Main mass:Adam Bates
Comments:Submitted by C. Agee
Plots: O isotopes:  
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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     This is 1 of 1611 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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